Garbage-burner.



J. A. BUBWELL.

GARBAGE BUB-NEE.

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91 1,375. Patented Feb. 2, 1909.

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John dBw-well.

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J. A. BURWELL.

GARBAGE BURNER.

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Patented Feb. 2, 1909.

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J. A. BURWELL.

GARBAGE BUB-HEB.

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Patented Feb. 2, 1909.

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amut UNITED STATES PATENT OFFICE.

JOHN A. HURWELL, OF SAN ANTONIO, TEXAB GABBAGE-BUBNEB.

Specification of Letters Patent.

Patented Feb. 2, 1909.

Application filed September 17, 1908. Serial No. 463,449.

To all whom it may concern:

Be it known that I, Juan A. BU-tWELL, of San Antonio, in the county ofBexar and State of Texas, have invented certain new and usefulImprovements in Garba e-Burners; and I hereby declare that the ollowin"is a full, clear, and exact description thereof? reference being had tothe accompanying drawings, which form part of this specification.

This invention is a novel furnace 'for incinerating garbage and refuseand its object is to rovide a furnace having a revolving ratc in whichthe material to be burned can be consumed and to so construct the ap)itratus that the waste material can be rea ily put into the rate whilebeing burned, and the grate can e continually revolved so that the wastewill be continually agitated and the ashes be sifted therefrom, thegrate be? ing preferably heated by means of oil or gas burners pro ucingjets of lame which are directed against the sides of the revolvinggrate.

The invention consists in the novel construction and combinations ofarts hereinafter more fully described, an set forth in the claims; anthe accompanying drawings illustrate a practical form of the nvention.and I will now describe the same in detail with reference thereto.

said dilawings: Figure 1 is a front ele-v when of t e apparatus partlyin section, and also showin in dotted, se -a telescopic section of hesmpke stack; raised; and the receiv and charg ng hop er in position overthe gra Fi is a can ral longitudh nal section throug the apparatusshowing the smoke stack elevated and the charging hopper in positionover the grate, and also showin in dotted lines the removable sections othe grate drawn out. Fig. 3 is a plan view of the apparatus partlybroken away and also show in dotted lines the receiving hopper inposition over the grate. F1 4 is a detalLview of the revolvintfgrate enarged. Figs, 5 and 0 are enlarge etail sectional views of the grate.Fig. 7 is an enlarged sect on on has 7-7, Fig. 4.

The revolving grate or container 1 is c lindaqmfnream efn vel oaa ctioa.t comprises ea. p ates 1 1", whw. are conp e g to. central shaft! whiqextends in! 1, 1', of said end plates, w 0 letter in beari 2 wm m m e ofsuitable wnstruc m.- and preferably of metal and embedded in the endwalls 3 of the furnace easing, which is 1 preferably made of brick andmay be lined interiorly with fire brick and made of sul|icicnt thicknessto prevent loss of heat by external radiation. if desired the hearingsmay be provided with rollers, as indicated at .3, in the drawings, toreduce friction.

The end plates 1, I, are provided near their peripheries with annularseries of slots I in which are secured the ends of grate bars 4 whichare preferably ribbed as indicated at 4' on their outer faces and alsoprovided with longitudinal ribs 4 on their inncr faces; and when allthese "rate bars are in position and connected to the end plates 1, 1",they form therewith a hollow c lindrlcal rate adapted to contain the garage urned.

to be In der t fa il e plac ng aarbe n t e grate. a certain. numb r f hg e era made removable or adjustable. As shown the end plates 1', 1 areprovided with removable sections l to each of which sections the ends offive grate bars are attached, see Fig. 4. These five grate bars are cutin two and are fastened together at their inner ends by means oftie-.rods and separators 1"- by hich the r inne nd re r gidly nited.-The u e m st ba s of th se 9- tioas ar pr d d with side flanges hi fi gKI a rtiens i he adj en rate bare an there y up r t e evahle ass me athey re s i an ou the g ate. s s opp d i h the tioas pp mie t th y co edirectly nd an orga s 3. inth tqp' allet he m e; t e w e in position theplates 1'" with the connects sectional grate bars, can be drawn outwardthrough openings 3 in the walls of the furnace, as shown in Fi 2, said 0enings being closable by suita le doors. hen the grate sections aredrawn out as indicated in dotted lines in Fi 2 any refuse chargedthrough openin 3 wi fall directly into the rate. After t e grate isfilled the removab e grate sections are slid inward and secured by meansof plates 1' reinovably attached to the end plates 1, 1", by means of bos as ndica e: in the drawin s Th "spe ms: 3 perm-1 y closed. by 0 met .eQe which senses wi a stack wet on 8 which t les op s .to a saperpflaedstack section 3' suite ly supported abo e the furn ce, as mdi et eg nthe ra mse The ho d 8 can be re. an e ti n 3 telescoped into stack 3' asindicated in i a sufiicient supply of oxygen to the combus Figs. 1 and 2of the drawings, when it is de- Y sired to charge the grate.

To facilitate charging the grate a crane 5 is provided at one side ofthe stack and carries a hopper 5 which corresponds in size to theopening 3 and when the hood 3 is raised this hopper 5 can be moved inunder the hood or over the opening 3 as shown in Fig. 2 and indicated indotted lines in Figs. 1 and 3, so as to deliver material previouslyplaced in the hopper directly into the cylindrical grate. After thegrate is charged the ho )per can be swung back out of the way asimicated in full lines in Figs. land 3 the hood 3 is then lowered andafter the movable rate bars have been replaced in position t to furnaceis ready for operation.

The 'rate is rotated during the burning of the gai'hage by suitablemeans. As shown a sprocket l" is placed on the hub 1' outside thefurnace, and can be driven by a sprocket chain 6 from a small sprocket6' on a shaft 6', which has a gear 0' meshing with a pinion 6 on a shaft6 carrying a gear ti" meshing with a pinion 6" on an engine or motorshaft 6; the gearing being so iroportioned as to properly reduce the seed etween the engine sha t and the cylin or. In practice I propose torotate the cylindrical grate about one or two revolutions er minute.

In each side of t e grate are arranged a series of oil or gas burningjet heads 7 which communicate with supply pi es 7 connected to anysuitable reservoir or uel supply, and which may also be supplied withsteam from the boiler by a pipe 7' the burner being provided withsuitable valves and devices to insure proper regulation of the severaljets.

It wil be observed that the jets are directed against the exterior ofthe revolving grate and will of course heat the furnace chamber and theentire grate, and as the latter revolves the jets of flame will directlycontact with the garbage in the grate through the interstices betweenthe rate bars and quickly reduce the contents 0 the grate to cinders orashes. As the grate is constantly revolved its contents are continuallystirred and agitated by reason of the ribs 4 which tend to pick up andcar the matters around in the grate. This stirrin of the garbagefacilitates the evaporation o the moisture therein which is dischargedthrough the uptake and insures the rapid incineratlon of the refuse. Asall the matter is confined in the grate, light refuse cannot beblown outof the chimney but will be retamed in the grate until incinerated, whilethe ashes will sift out of the grate into the ash car 8, which ispreferabl wheeled and can be introduced into the mace, under the gratethrough an opening 3 in the front wall closable b a suitable door 3"which may be provide with air valves 3', to insure tion chamber. l hesliding sections of the grate can be easily operated, and there isnothing about them to get out of place during the rotation of the grate;and as the opening in the grate when such sections are drawn out IS verylarge, a large quantity of garbage can be quickly emptied into the grateat each operation, and animal bodies can be placed therein andincinerated if desired.

lhe furnace does not have to he stopped in order to remove the ashes,and one ash car can be withdrawn and another one run into place withoutstopping the fire.

By using a telescopic smoke stuck or removable hood 3 1 am able toutilize the outlet opening of the furnace for the chargin opening of thegrate and at the most. a( vantagcous position for charging the grate.Durin the churgin r operationstho burners shoultlbe cut off. lho furnacecan be built )racticully air-tight as no fuel inlet openings have to bemade therein and the com )ustion chamber is practically wholly inclosedwithin thick fire-brick walls, so that no odors can escape exceptthrough the smoke stack, which can be made sufficiently high to carrythe odors out of the we If desired a small stream of water can bedirected on each of the journal bearings of the grate so as to kee themcool.

'1 ie ate-bars are preferably secured to the on plates 1, l and theplates 1', by having said plates rovided with T-slots 1' to which theends 0 the grate bars are fitted as indicated in Figs. 6 and 7; and thesaid bars are provided adjacent their ends with lateral flanges 4' whichare provided with notches 4 which are engaged by bolts 4 passing throughperforations 1 in the plates.

he flanges 4' of adjacent bars come so near together that one bolt 4"assists in securing two grate bars in position.

Having described my invention what I claim as new and desire to secureby Letters Patent is:

1. In a refuse burning up aratus the combination of a furnace chem er, acylindrical grate therein comprising circular end plates rotatablymounted in the furnace walls, and having removable sections, grate barsconnected to said end plates, and sectional grate bars connected to saidremovable sections, substantially as described.

2. In a refuse burning up aratus the combination of a furnace chain or,a cylindrical grate therein comprising circular end plates rotatablymounted in the furnace walls, ribbed ate bars connected to said endplates; said end plates having removable sections, a set 0 sectionalgrate bars connected to said removable sections, the outermost sectionalgrate bars havin ribs engaging grooves in the adjacent ribbed gratebars, substantially as described.

3. In a garbage burning plant the combination of a furnace, gratetherein corn rising circular end ilates rotatably mounte in the furnacewall having removable sections, grate bars connecting said end plates,and sectional grate bars connected to said removable sections andforming the door of the grate; with means for heating the furnace, meansfor s and furnace having a slidable 1 ed to be opened when the grate isstopped a rotatable cylindrical l t l l charging the grate, and meansfor rotating the grate.

l. in a garbage burning apparatus the. combination of a liiriiaee havingan opening in its roof, a stack above the opening, an adjustable hoodcovering said opening and telescoping with the stack, a rotatablecvliiidrical grate in the furnace adapted to be charged through saidopening when the hood is raised, and a hopper for charging the grate gotliroii 11 said opening.

5. garbage burning apparatus coiiiprising a furnace having an opening inits roof a stack above the opening, a removable hood over said openingcommunicating with the stack, a rotatable cylindrical grate in the sidesection adapttwo witnesses.

JOHN A. BUltWELL Witnesses B. l). I). Gnnsn, lton'r. P. Wnioii'r

